CN107293631B - Light emitting diode - Google Patents
Light emitting diode Download PDFInfo
- Publication number
- CN107293631B CN107293631B CN201710592004.7A CN201710592004A CN107293631B CN 107293631 B CN107293631 B CN 107293631B CN 201710592004 A CN201710592004 A CN 201710592004A CN 107293631 B CN107293631 B CN 107293631B
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- China
- Prior art keywords
- light
- lens
- emitting
- emitting diode
- reflecting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000002310 reflectometry Methods 0.000 claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 241001465382 Physalis alkekengi Species 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0071—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source adapted to illuminate a complete hemisphere or a plane extending 360 degrees around the source
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
Abstract
A kind of light emitting diode, including light-emitting diode chip for backlight unit and lens, it is characterized by: the incidence surface of the light-emitting diode chip for backlight unit face lens, the light that the lens are used to issue light-emitting diode chip for backlight unit is adjusted, the lens include incidence surface and light-emitting surface, the light-emitting surface is located at the lateral of the lens and around the incidence surface, the lens further include a reflecting surface, the middle part of the reflecting surface is recessed to the incidence surface, the edge of the reflecting surface is connected with the light-emitting surface, the reflecting surface is tilted simultaneously towards the incidence surface and light-emitting surface, a part of directive reflecting surface of the light for injecting the lens from the incidence surface, another part is directly projected by light-emitting surface, the reflectivity of the reflecting surface is greater than refractive index, a part of light of the directive reflecting surface is reflected onto the light-emitting surface and projects lens, another part light of the directive reflecting surface is directly from reflecting surface Outer is projected, the transmissivity of the light-emitting surface is greater than reflectivity.
Description
It is on 04 28th, 2012 that the application, which is application No. is the 2012101304185, applying date, invention and created name is
The divisional application of the patent of " light emitting diode and its lens ".
Technical field
The present invention relates to a kind of light emitting diodes.
Background technique
Light emitting diode has the various features such as environmental protection, power saving, service life length as a kind of efficient light source, wide
General applies to numerous areas, such as life lighting, back light.The light-emitting angle of existing light emitting diode is generally
120 °, this lesser light-emitting angle makes LED source be equivalent to area source.With the light model out of transmission light source wide-angle
It encloses and compares, the lesser light-emitting angle of LED source has many missings.And the star of newest american energy requires to replace
Angle is needed to be greater than 180 degree for the LED ball lamp of conventional bulb.Therefore the energy-efficient of light emitting diode how is played
The distribution design of light shape is reached even better than conventional light source lamps and lanterns, accelerates it answering to play the advantage of light emitting diode by advantage
It is also a urgent problem to be solved with the popularization in field, this is even more greatly challenge and a quotient for indoor lamp
Machine.As a result, in LED source design, secondary optical design is increasingly prominent.
Summary of the invention
In view of this, it is necessary to provide a kind of light emitting diode and its lens with larger beam angle.
A kind of lens, be used for light-emitting diode chip for backlight unit issue light be adjusted, the lens include incidence surface and
Light-emitting surface, the light-emitting surface are located at the lateral of the lens and around the incidence surfaces, which further includes a reflecting surface, the reflecting surface
Middle part is recessed to the incidence surface, and the edge of the reflecting surface is connected with the light-emitting surface, which tilts towards the incidence surface simultaneously
And light-emitting surface, a part of directive reflecting surface of the light for injecting the lens from the incidence surface, another part are directly penetrated by light-emitting surface
Out, the reflectivity of the reflecting surface is greater than refractive index, and a part of light of the directive reflecting surface is reflected onto the light-emitting surface and projects thoroughly
Mirror, another part light of the directive reflecting surface directly project outer from reflecting surface, and the transmissivity of the light-emitting surface is greater than anti-
Penetrate rate.
A kind of light emitting diode, including light-emitting diode chip for backlight unit and lens, the lens its be used for light-emitting diode chip for backlight unit
The light of sending is adjusted, which includes incidence surface and light-emitting surface, which, which is located at the lateral of the lens and surround, is somebody's turn to do
Incidence surface, the lens further include a reflecting surface, and the middle part of the reflecting surface is recessed to the incidence surface, and the edge of the reflecting surface goes out with this
Smooth surface is connected, which tilts simultaneously towards the incidence surface and light-emitting surface, injects light one of the lens from the incidence surface
Divide the directive reflecting surface, another part is directly projected by light-emitting surface, and the reflectivity of the reflecting surface is greater than refractive index, the directive reflection
A part of light in face is reflected onto the light-emitting surface and projects lens, and another part light of the directive reflecting surface is directly from reflecting surface
Outer is projected, the transmissivity of the light-emitting surface is greater than reflectivity, the light-emitting diode chip for backlight unit face incidence surface.
Reflecting surface and incidence surface and the light-emitting surface inclination of light emitting diode in the present invention, lens are opposite, and the reflection
The reflectivity in face is greater than transmissivity, so, it is ensured that by the reflective surface, to being located at, the lens are lateral to be gone out more light
Smooth surface obtains the emergent ray of greater angle, close to traditional lighting so that the light-emitting angle of the light emitting diode be made to be greater than 180 °
The effect of the range of exposures of lamps and lanterns.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the light emitting diode in a preferred embodiment of the present invention.
Fig. 2 is the perspective view of the lens of light emitting diode shown in FIG. 1.
Fig. 3 is the lens in Fig. 2 in the perspective view of other direction.
Fig. 4 is the operation principle schematic diagram of light emitting diode shown in Fig. 1.
Fig. 5 is the light distribution curve of light emitting diode shown in Fig. 1.
Main element symbol description
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Referring to Fig. 1, the light emitting diode 100 that embodiment of the present invention provides includes a pedestal 10, is set to the pedestal 10
On light-emitting diode chip for backlight unit 20 and cover at lens 30 on the light-emitting diode chip for backlight unit.
Referring to Figure 2 together to Fig. 3, the lens 30 include one dipped beam end 31 of interconnection and a distance light end 32, wherein
The dipped beam end 31 is close to the light-emitting diode chip for backlight unit 20, and the distance light end 32 is far from the light-emitting diode chip for backlight unit 20, and the dipped beam end
31 is coaxial with distance light end 32.
The bottom at the dipped beam end 31 is towards the light-emitting diode chip for backlight unit 20, the top at the dipped beam end 31 and the distance light end 32 1
Body connection.The dipped beam end 31 is substantially cylindrical, which includes one first light-emitting surface 311 and a bottom wall 312.This first
Light-emitting surface 311 is the periphery at the dipped beam end 31.The bottom wall 312 is located at the bottom at the dipped beam end 31.The outer diameter at the dipped beam end 31
It is gradually increased from the bottom wall 312 to the distance light end 32.
The bottom wall 312 is equipped with a groove 3120, the groove 3120 towards the light-emitting diode chip for backlight unit 20, the bottom wall 312
It from shallow to deep include one first groove portion 3121 and one second groove portion 3122, wherein first groove portion 3121 is in rectangle, second slot
Portion 3122 is in round pie, and the inside of the inner wall of second groove portion 3122 and first groove portion 3121 is in tangent relation, first slot
Portion 3121, the second groove portion 3122 are coaxial with the dipped beam end 31.The bottom of the bottom of the groove 3120, i.e. second groove portion 3122 is
One incidence surface 313, the incidence surface 313 include positioned at first light in part 3131 at middle part and around outside first light in part 3131
One second light in part 3132 enclosed.First light in part 3131 is a circular flat, which is an annular
Inclined-plane.Side where second light in part 3132 from from the edge of first light in part 3131 to the distance light end 32, which tilts, to be extended,
To make the depth of second groove portion 3122 be gradually increased from middle part to edge.The inner wall of the incidence surface 313, the first groove portion 3121
And second the inner wall of groove portion 3122 be that transmissivity is greater than reflectivity, the light generated in order to light-emitting diode chip for backlight unit 20 is from institute
The inner wall for stating incidence surface 313, the inner wall of the first groove portion 3121 and the second groove portion 3122 enters in lens 30.
Opposite sides on the bottom wall 312 in the groove 3120 is respectively provided with a lug boss 3123, and each lug boss 3123 is in
Arch, the arch face of each lug boss 3123 are smoothly connected with first light-emitting surface 311 at the dipped beam end 31.Two lug boss 3123 it
Between form a short slot 314, for accommodating the pedestal 10.The middle part of each lug boss 3123 is equipped with along the axially extending of the lens 30
A pillar 3124.The pillar 3124 is cylindrical, as the location structure of the lens 30, for fixing the lens 30.
Greatly to being in truncated cone-shaped, the outer distance light end 32 without leave at the distance light end 32 connect one with the dipped beam end 31 at the distance light end 32
It holds to the other end and is gradually increased, the periphery at the distance light end 32 is the second light-emitting surface 321 of the lens 30.The distance light end 32 is most
Small outer diameter is greater than the maximum outside diameter at the dipped beam end 31, to form one between first light-emitting surface 311 and the second light-emitting surface 321
Ring-shaped step 315.Second light-emitting surface 321 is adjacent with the first light-emitting surface 311.First light-emitting surface 311 and the second light-emitting surface 321
It is greater than reflectivity for transmissivity, which is located at the lateral of the lens 30 with the second light-emitting surface 321 and enters around this
Smooth surface 313, to collectively form the light-emitting surface of the lens 30.
The top at the distance light end 32 is recessed to the incidence surface 313, so that a funnel-form is formed on the top in the distance light end 32
Reflecting surface 323.A minimum point 3230 is formed at the center of the reflecting surface 323,3230 face of the minimum point incidence surface 313
Center.The highest point 3231 of the reflecting surface 323 forms an annulus.The reflecting surface 323 has the section of a V-arrangement, the V-arrangement section
The camber line of the minimum point 3230 is converged at including two, the minimum curvature of each camber line is 0.0642, maximum curvature 0.1920,
Each camber line gradually becomes smaller relative to the slope at the center of incidence surface 313 from the minimum point 3230 to the highest point 3231, and should
The edge slope of reflecting surface is 0, to form the horizontal ora terminalis 3232 of an annular at the edge of the reflecting surface 323.The horizontal ends
The fillet surface 3233 of an annular is formed between edge 3232 and second light-emitting surface 321, which second goes out with this
Smooth surface 321 is smoothly connected by the fillet surface 3233.The reflectivity of the reflecting surface 323 and fillet surface 3233 is greater than transmission
Rate.
Referring to Fig. 4, light a part that the light-emitting diode chip for backlight unit 20 issues is straight when the light emitting diode 100 works
The first light-emitting surface 311 and the second light-emitting surface 321 for connecting the lens 30 are from the laterally emitted of the lens 30, since this first goes out
Smooth surface 311 and the transmissivity of the second light-emitting surface 321 are greater than reflectivity, so as to ensure the lateral luminous intensity out of the lens 30；
Another part light is incident upon the fillet surface 3233 of the reflecting surface 323 and 323 edge of reflecting surface.Be incident upon the reflecting surface 323 and
The light of fillet surface 3233, a part are reflected onto the side opposite with 20 light direction of light-emitting diode chip for backlight unit and pass through and be somebody's turn to do
First light-emitting surface 311 and the second light-emitting surface 321 project, to increase 30 side of lens to the angle of emergent ray, make beam angle
Degree is greater than 180 °；Another part is projected from the reflecting surface 323 and fillet surface 3233, due to the reflecting surface 323 and fillet surface
3233 reflectivity is greater than transmissivity, and therefore, the light ratio reflected by the reflecting surface 323 and fillet surface 3233 is from the reflecting surface
323 and fillet surface 3233 transmit light it is more, to further increase intensity of 30 side of lens to emergent ray.
Due to light from the lens 30 inject air in when, when the angle of incidence is larger than a critical angle, light i.e. lens 30 with
The interface of air is totally reflected, therefore, with above structure lens, can by adjust reflecting surface 323 curvature and
It adjusts from reflecting surface 323 relative to the slope of light-emitting diode chip for backlight unit 20 and reflexes to the first, second light-emitting surface 311,321
The number and angle of light, consequently facilitating designing the light emitting diode with larger light-emitting angle and uniform in light emission.In addition, should
Second light in part 3132 of the incidence surface 313 of lens 30 is from the edge of its first light in part 3131 into second groove portion 3122
Wall inclination extends, and so as to by more light refractions to the reflecting surface 323, laterally goes out light with guarantee the lens 30.
Referring to Fig. 5, using the axial direction of the lens 30 as the 0 of light-emitting diode chip for backlight unit ° of light direction, the gained lens 30
Distribution curve flux as shown in figure 5, dotted line show above-mentioned light emitting diode 100 along perpendicular to 0 ° of light direction, i.e. 90 ° of directions
On distribution curve flux, shown in solid is above-mentioned light emitting diode 100 along being parallel to 0 ° of light direction, i.e. light distribution on 0 ° of direction
Curve.The light emitting diode 100 can project uniformly on the plane perpendicular to 0 ° of light direction it can be seen from solid line
Approximate circle hot spot (wherein contain the error as caused by the position of light-emitting diode chip for backlight unit 20 and the influence of shape).By reality
Line can be seen that 100 shooting angle of light emitting diode and be greater than 180 °, wherein 90% or more light be distributed in about 170 °~
In 190 ° and 350 °~10 ° of section, the light within the scope of 10 °~160 ° is relatively fewer, ensure that light emitting diode 100 from face
Lateral light-emitting angle and out luminous intensity.
The light emitting diode 100 of embodiment of the present invention, the reflecting surface 323 of lens is in the slope and incidence surface changed
313 and first light-emitting surface 311, the second light-emitting surface 321 tilt relatively, and the reflectivity of the reflecting surface 323 is greater than transmissivity, such as
This, it is ensured that most light that light-emitting diode chip for backlight unit 20 issues by the reflecting surface 323 reflex to positioned at the lens it is lateral the
One, the second light-emitting surface 311,321 obtains the outgoing of greater angle so that the light-emitting angle of the light emitting diode be made to be greater than 180 °
Light, close to the effect of the range of exposures of traditional lighting lamps and lanterns.In a particular application, above-mentioned light emitting diode 100, can arrange
It circularizes, the round or patterns such as rectangular, to obtain more uniform illumination.
It is understood that for those of ordinary skill in the art, can do in accordance with the technical idea of the present invention
Its point of various changes and modifications out, and all these changes and deformation all should belong to the protection model of the claims in the present invention
It encloses.
Claims (7)
1. a kind of light emitting diode, including light-emitting diode chip for backlight unit and lens, it is characterised in that: the light-emitting diode chip for backlight unit face
The incidence surface of the lens, the light that the lens are used to issue light-emitting diode chip for backlight unit are adjusted, which includes into light
Face and light-emitting surface, the light-emitting surface are located at the lateral of the lens and around the incidence surfaces, which further includes a reflecting surface, the reflection
The middle part in face is recessed to the incidence surface, and the edge of the reflecting surface is connected with the light-emitting surface, which tilts to enter towards this simultaneously
Smooth surface and light-emitting surface, a part of directive reflecting surface of the light for injecting the lens from the incidence surface, another part is directly by going out light
Face is projected, and the reflectivity of the reflecting surface is greater than refractive index, and a part of light of the directive reflecting surface is reflected onto the light-emitting surface and penetrates
Lens out, another part light of the directive reflecting surface directly project outer from reflecting surface, and the transmissivity of the light-emitting surface is big
In reflectivity；Reflecting surface is funnel-form, and a minimum point is formed at the center of the reflecting surface, in the minimum point face incidence surface
The heart；The reflecting surface has the section of a V-arrangement, which includes two camber lines for converging at the minimum point, and each camber line is most
Small curvature be 0.0642, maximum curvature 0.1920, each camber line relative to the center of incidence surface slope from the minimum point to
It gradually becomes smaller outside.
2. light emitting diode as described in claim 1, it is characterised in that: the edge slope of the reflecting surface is 0, thus anti-at this
The edge for penetrating face forms the horizontal ora terminalis of an annular, and the fillet surface of an annular is formed between the horizontal ora terminalis and the light-emitting surface,
The horizontal ora terminalis is smoothly connected with the light-emitting surface by the fillet surface, and the reflectivity of fillet surface is greater than transmissivity.
3. light emitting diode as described in claim 1, it is characterised in that: the lens include dipped beam end and distance light end, the dipped beam
Hold cylindrical, the distance light end is in a circular table shape, and the dipped beam end is coaxial with distance light end, which is formed in the bottom at the dipped beam end
Portion, the top at the dipped beam end are connect with the bottom at the distance light end, which is formed in the top at the distance light end, the dipped beam end
Periphery forms one first light-emitting surface, and the periphery at the distance light end forms one second light-emitting surface, which goes out with second
Smooth surface is adjacent and collectively constitutes the light-emitting surface.
4. light emitting diode as claimed in claim 3, it is characterised in that: the dipped beam end it is outer without leave where the incidence surface one
The lateral distance light end side is gradually increased, and the outer distance light end without leave at the distance light end connect one end with the dipped beam end to another
End is gradually increased, and the minimum outer diameter at the distance light end is greater than the maximum outside diameter at the dipped beam end, thus in first light-emitting surface and second
A ring-shaped step is formed between light-emitting surface.
5. light emitting diode as claimed in claim 3, it is characterised in that: a bottom wall, the bottom wall are formed on the bottom at the dipped beam end
One groove of upper formation, the groove include one first groove portion and one second groove portion from shallow to deep, and wherein first groove portion is in rectangle, should
Second groove portion is in round pie, and the inside of the inner wall of second groove portion and first groove portion is in tangent relation, the bottom of second groove portion
Portion forms the incidence surface.
6. light emitting diode as claimed in claim 5, it is characterised in that: the opposite sides on the bottom wall in the groove is respectively provided with
One lug boss, each lug boss is domed, and the arch face of each lug boss and first light-emitting surface at the dipped beam end are smoothly connected, and two
A short slot is formed between the lug boss, the middle part of each lug boss is equipped with the axially extending pillar along the lens.
7. light emitting diode as claimed in claim 3, it is characterised in that: the incidence surface includes the first light in part positioned at middle part
And the second light in part around first light in part periphery, second light in part is from the edge of first light in part to the distance light
Side where end, which tilts, to be extended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710592004.7A CN107293631B (en) | 2012-04-28 | 2012-04-28 | Light emitting diode |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210130418.5A CN103378280B (en) | 2012-04-28 | 2012-04-28 | The lens of light emitting diode |
| CN201710592004.7A CN107293631B (en) | 2012-04-28 | 2012-04-28 | Light emitting diode |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210130418.5A Division CN103378280B (en) | 2012-04-28 | 2012-04-28 | The lens of light emitting diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107293631A CN107293631A (en) | 2017-10-24 |
| CN107293631B true CN107293631B (en) | 2019-02-01 |
Family
ID=49463108
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710592004.7A Expired - Fee Related CN107293631B (en) | 2012-04-28 | 2012-04-28 | Light emitting diode |
| CN201210130418.5A Active CN103378280B (en) | 2012-04-28 | 2012-04-28 | The lens of light emitting diode |
| CN201810008000.4A Active CN108054269B (en) | 2012-04-28 | 2012-04-28 | Light-emitting diode |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210130418.5A Active CN103378280B (en) | 2012-04-28 | 2012-04-28 | The lens of light emitting diode |
| CN201810008000.4A Active CN108054269B (en) | 2012-04-28 | 2012-04-28 | Light-emitting diode |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20130286658A1 (en) |
| CN (3) | CN107293631B (en) |
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| CN103375768A (en) * | 2012-04-26 | 2013-10-30 | 全亿大科技（佛山）有限公司 | Lens and light source module |
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- 2012-04-28 CN CN201210130418.5A patent/CN103378280B/en active Active
- 2012-04-28 CN CN201810008000.4A patent/CN108054269B/en active Active
- 2012-10-17 US US13/653,635 patent/US20130286658A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| US20130286658A1 (en) | 2013-10-31 |
| CN108054269B (en) | 2020-07-24 |
| CN103378280A (en) | 2013-10-30 |
| CN103378280B (en) | 2017-12-15 |
| CN108054269A (en) | 2018-05-18 |
| CN107293631A (en) | 2017-10-24 |
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